Elements of plane and solid free-hand geometrical drawing, with lettering; and some elements of geometrical ornamental design, including the principals of harmonic angular ratios, etc. In three parts ... for draughtsmen and artisans; and teachers and students of industrial and mechanical drawing (1878)
Warren, S. Edward (Samuel Edward), 1831-1909 · New York, J. Wiley & sons · leaf 170
132 FEEE-HAND GEOMETRICAL DRAWING. measured on lines drawn from a, fixed point. When this pointis nearer the fixed line than the fixed distance, one branch of … 4 Fig. 38. the curve will be looped. Thus E E is the fixed line, and Athe fixed point. Then dQ =: de ,• ha^hc, etc. GEOMETRIC SYMBOLISM. 133 106. Turning now from these curves to a complex educa-tional estal>lishment, we find for its corresponding fixed ele-ments, 1°, a foundation ootcrse of…
Geometrical drawing · Mechanical drawing
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